Flora of North America species comparison

usually crowded at stem apex;

stipules partially adnate to petiole, 1-veined, linear to oblanceolate, 4–12 mm, usually longer than petiole;

petiole 2–10 mm, 1/4–1/2 length of blade, with appressed stellate hairs;

blade narrowly elliptic, 1–2 cm, usually 2–3 times longer than wide, base truncate to subcordate, margins dentate apically, entire basally, apex acute or obtuse, surfaces stellate-hairy abaxially, glabrous adaxially.

stipules free from petiole, linear, 6–11 mm, 2 times length of corresponding petiole;

petiole 3–7 mm, 1/10 length of blade, subglabrous;

blade lanceolate-elliptic to subrhombic, 3–9 cm, 2.5–5 times longer than wide, base truncate, margins crenate or serrate to base, apex usually acute, surfaces glabrous.

terminal, subsessile, usually 1–10-flowered, flowers crowded at branch apices because of shortening of internodes, obscurely solitary, axillary.

axillary solitary or paired flowers.

adnate to petiole of leaflike bract, 0.1–0.4 cm, shorter than calyx.

articulated, 0.5–2(–3) cm, usually 2–3 times calyx length, 1/4–1/2 length of subtending leaf.

calyx obscurely angulate, 4–6 mm, hirsute, lobes ovate;

petals usually salmon-pink, red-orange, sometimes yellowish, 5–11 mm;

staminal column hairy;

style 5–8-branched.

calyx ribbed, 7–10 mm, glabrous, lobes ovate;

petals yellow, 15 mm;

staminal column hairy;

style 10–12-branched.

conic, 5–6 mm diam., subglabrous;

mericarps 5–8, prominently muricate, otherwise glabrous.

subconic, 6–7 mm diam., minutely hairy apically;

mericarps 10–12, 5 mm, laterally reticulate, apex spined, spines 1.5 mm.

= 16.